PDF-Intrinsically safe

Immune to EMIRFI Up to 150. indd 1 51009 115604 am brPage 2br 11 Introduction Intrinsic safety IS is a lowenergy signalling technique that prevents explosions from occurring by ensuring that the energy transferred to a hazardous area is well below the energy required to initiat This pa per chrono logically accounts the history of all intrinsically safe explo sion pro tectio n concepts fo r fieldbus and gi ves an outlook on DAR and the redundant F SCO concepts The pa pe r then go es on to co mpare all methods oneonone wi th Intrinsic Safety Circuit Intrinsically SafeIntrinsically SafeApparatusApplications(%Switching32.0%mechanical switches 85.0%proximity switches 15.0%2-wire transmitters22.0%Thermocouples & RTDs13.0%Load
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